/* ============================================================
   kaoshi-kemian.css · 考试科目
   题头⑦：斜切/弧形背景；表格概览 + 三列卡片 + zigzag + 磁贴 + 手风琴
   ============================================================ */

/* ---------- 题头⑦：斜切/弧形背景 ---------- */
.khead{
  position:relative; padding:150px 0 110px;
  background:linear-gradient(135deg,#FFF4EA 0%,#FFE3CC 55%,#FFF8F1 100%);
  overflow:hidden;
}
.khead-deco{
  position:absolute; right:-120px; top:-80px; width:460px; height:460px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(255,122,28,.22), rgba(255,122,28,0) 68%);
}
.khead-deco::after{
  content:""; position:absolute; left:-60px; bottom:-40px; width:260px; height:260px;
  border-radius:50%; background:rgba(18,183,106,.12);
}
.khead::after{
  content:""; position:absolute; left:0; right:0; bottom:-1px; height:60px;
  background:var(--white);
  clip-path:polygon(0 100%, 100% 100%, 100% 0, 0 62%);
}
.khead-inner{ position:relative; z-index:2; }
.khead-kicker{
  display:inline-block; font-size:13px; font-weight:700; letter-spacing:3px;
  color:var(--orange-deep); margin:14px 0 12px;
}
.khead-title{ font-size:40px; font-weight:800; max-width:820px; line-height:1.3; }
.khead-sub{ margin-top:16px; color:var(--ink-2); font-size:16px; max-width:760px; }
.khead-tags{ margin-top:22px; display:flex; flex-wrap:wrap; gap:10px; }
.khead-tags span{
  font-size:13px; font-weight:600; color:var(--orange-deep);
  background:#fff; border:1px solid rgba(255,122,28,.35);
  padding:6px 14px; border-radius:999px;
}

/* ---------- 概览表 ---------- */
.kemian-table-wrap{
  margin-top:34px; background:#fff; border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm); overflow:hidden; border:1px solid var(--line);
}
.kemian-table{ width:100%; border-collapse:collapse; font-size:15px; }
.kemian-table th, .kemian-table td{ padding:15px 20px; text-align:left; }
.kemian-table thead th{
  background:linear-gradient(135deg,var(--orange),var(--orange-deep));
  color:#fff; font-weight:700; font-size:14.5px; letter-spacing:1px;
}
.kemian-table tbody tr{ border-top:1px solid var(--line); }
.kemian-table tbody tr:nth-child(even){ background:var(--bg-soft); }
.kemian-table tbody td:first-child{ font-weight:700; white-space:nowrap; }
.kemian-table tbody td:first-child b{ color:var(--green-deep); }
.table-note{
  padding:14px 20px; font-size:13px; color:var(--ink-3);
  border-top:1px dashed var(--line); background:var(--bg-orange);
}

/* ---------- 题型三列卡片 ---------- */
.bg-soft{ background:var(--bg-soft); }
.fmt-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; margin-top:36px; }
.fmt-card{
  background:#fff; border-radius:var(--radius); padding:30px 26px;
  box-shadow:var(--shadow-sm); border-top:4px solid var(--green);
}
.fmt-card:nth-child(2){ border-top-color:var(--orange); }
.fmt-card:nth-child(3){ border-top-color:var(--green-2); }
.fmt-num{
  display:inline-flex; width:44px; height:44px; align-items:center; justify-content:center;
  border-radius:12px; background:var(--green-soft); color:var(--green-deep);
  font-weight:800; margin-bottom:16px;
}
.fmt-card:nth-child(2) .fmt-num{ background:var(--orange-soft); color:var(--orange-deep); }
.fmt-card h3{ font-size:19px; margin-bottom:10px; }
.fmt-card p{ color:var(--ink-2); font-size:14.5px; }

/* ---------- zigzag 复习重点 ---------- */
.zig{ margin-top:40px; display:flex; flex-direction:column; gap:44px; }
.zig-item{
  display:grid; grid-template-columns:1fr 1.2fr; gap:36px; align-items:center;
}
.zig-item.zig-rev .zig-img{ order:2; }
.zig-img img{
  width:100%; height:260px; object-fit:cover; border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
}
.zig-step{
  display:inline-block; font-size:13px; font-weight:700; letter-spacing:2px;
  color:var(--orange-deep); background:var(--orange-soft);
  padding:5px 14px; border-radius:999px; margin-bottom:12px;
}
.zig-body h3{ font-size:23px; margin-bottom:12px; }
.zig-body p{ color:var(--ink-2); }

/* ---------- 岗位磁贴 ---------- */
.bg-orange{ background:var(--bg-orange); }
.post-tiles{
  margin-top:36px; display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.ptile{
  background:#fff; border-radius:var(--radius); padding:22px 20px;
  box-shadow:var(--shadow-sm); border-left:4px solid var(--orange);
  transition:transform .25s ease, box-shadow .25s ease;
}
.ptile:nth-child(even){ border-left-color:var(--green); }
.ptile:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
.ptile b{ display:block; font-size:18px; margin-bottom:6px; }
.ptile span{ font-size:13.5px; color:var(--ink-3); }
.ptile:hover span{ color:var(--orange-deep); }
.tile-more{ text-align:center; }

/* ---------- 手风琴 ---------- */
.narrow{ max-width:860px; }
.acc{ margin-top:30px; }
.acc-item{
  background:#fff; border:1px solid var(--line); border-radius:14px;
  margin-bottom:12px; overflow:hidden;
}
.acc-item summary{
  cursor:pointer; padding:18px 22px; font-weight:700; font-size:16px;
  list-style:none; position:relative; padding-right:44px;
}
.acc-item summary::-webkit-details-marker{ display:none; }
.acc-item summary::after{
  content:"+"; position:absolute; right:20px; top:50%; transform:translateY(-50%);
  width:26px; height:26px; border-radius:50%; background:var(--green-soft);
  color:var(--green-deep); display:flex; align-items:center; justify-content:center;
  font-weight:700; transition:transform .25s ease;
}
.acc-item[open] summary::after{ content:"−"; transform:translateY(-50%) rotate(180deg); }
.acc-item p{ padding:0 22px 18px; color:var(--ink-2); font-size:14.5px; }
.acc-item p a{ color:var(--orange-deep); text-decoration:underline; }

/* ---------- 咨询行动带 ---------- */
.kcta{
  margin:40px 0 0;
  background:linear-gradient(120deg,#0F1F17 0%,#143525 100%);
  color:#fff; padding:64px 0; position:relative; overflow:hidden;
}
.kcta::before{
  content:""; position:absolute; right:-80px; top:-80px; width:320px; height:320px;
  border-radius:50%; background:radial-gradient(circle, rgba(255,122,28,.25), transparent 70%);
}
.kcta-inner{ position:relative; z-index:2; text-align:center; }
.kcta-badge{
  display:inline-block; font-size:12px; font-weight:700; letter-spacing:3px;
  color:var(--green-2); border:1px solid rgba(62,213,152,.5);
  padding:5px 16px; border-radius:999px; margin-bottom:16px;
}
.kcta h2{ font-size:30px; margin-bottom:12px; }
.kcta p{ color:#B9C8BF; max-width:640px; margin:0 auto 26px; }
.kcta-actions{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .khead{ padding:130px 0 90px; }
  .khead-title{ font-size:30px; }
  .fmt-grid{ grid-template-columns:1fr; }
  .zig-item{ grid-template-columns:1fr; gap:18px; }
  .zig-item.zig-rev .zig-img{ order:0; }
  .post-tiles{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:640px){
  .kemian-table{ font-size:13px; }
  .kemian-table th, .kemian-table td{ padding:10px 12px; }
  .post-tiles{ grid-template-columns:1fr 1fr; }
}